Powershell change file

Or use Select-String and the 'Round-trip date/time pattern' 'o'
See Standard Date and Time Format Strings

$path = 'C:\tmp\appFiles.appcache\YOUR-FILENAME' $content = Get-Content $path $match = $content | Select-String -Pattern 'Version:' -SimpleMatch -List if ($match) { $content[$match.LineNumber - 1] = "Version: {0}" -f (Get-Date -Format 'o') $content | Set-Content -Path $path } 

This really is not a script writing service. But if you promise me you will learn more about PowerShell and start trying to understand the following script, I will give you this to work with. Protip: when learning PowerShell you should use PowerShell ISE and press cntrl + R so you have a better way to write and understand PowerShell.

$path = "path to your file" $content = Get-Content $path $date = Get-Date -Format s foreach($row in $content){ if($row -match "Version:"){ $newContent = $content.replace("$row","Version: $date+01:00") } } $newContent | Set-Content $path 

The above script gets the content of the file given, then takes the current date. It then searches each row of the content for a mathing text. When found it replaces that specific line with the custom line we created. Then we take the new content and set it to the file we specified. You basically overwrite the whole file this way!

• To have a complete date string according to the given format with part seconds and UTC offset
• replace the Version string with a positive lookbehind RegEx
• save to same file name (requires reading to memory first)

## Q:\Test\2019\01\18\SO_54255102.ps1 $File = 'C:\tmp\appFiles.appcache' $Date = Get-Date -f 'yyyy-MM-dd\THH:mm:ss.fffffffzzzzz' # or simply (Get-Date -f o) (Get-Content $File) -Replace '(?<=^Version: ).*$',$Date | Set-Content $File